Cats in Baden-Württemberg, Germany: rules and travel
Baden-Württemberg has no state-wide register, chip, insurance or Sachkunde duty for ordinary dogs; the state rules cover listed and dangerous dogs. Leash rules and dog tax are set by municipalities.
Baden-Württemberg regulates mainly dangerous dogs by state ordinance; everything else is municipal. Official Land pages were not reached, so most fields are secondary or unconfirmed.
The national rules for Germany apply here too. National rules
Laws change: this is general information, not legal advice. The authority linked on each line has the final word.